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381738044 = 221941122509
BaseRepresentation
bin10110110000001…
…101110000111100
3222121022022011002
4112300031300330
51240211104134
6101513545432
712313501622
oct2660156074
9877268132
10381738044
11186532496
12a7a15278
13611192cc
14389ad512
15237a787e
hex16c0dc3c

381738044 has 24 divisors (see below), whose sum is σ = 720358800. Its totient is φ = 176411520.

The previous prime is 381738037. The next prime is 381738059. The reversal of 381738044 is 440837183.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 381737989 and 381738007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58139 + ... + 64370.

It is an arithmetic number, because the mean of its divisors is an integer number (30014950).

Almost surely, 2381738044 is an apocalyptic number.

It is an amenable number.

381738044 is a deficient number, since it is larger than the sum of its proper divisors (338620756).

381738044 is a wasteful number, since it uses less digits than its factorization.

381738044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122573 (or 122571 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 381738044 is about 19538.1177189616. The cubic root of 381738044 is about 725.4182566376.

The spelling of 381738044 in words is "three hundred eighty-one million, seven hundred thirty-eight thousand, forty-four".

Divisors: 1 2 4 19 38 41 76 82 164 779 1558 3116 122509 245018 490036 2327671 4655342 5022869 9310684 10045738 20091476 95434511 190869022 381738044